MCAS is the security tool to control and the compoent of Microsofts Cloud Security stack. It helps you to take full Advantage of the promise of Cloud applications. Moreover MCAS Can help you to uncover shadow IT and assess Risk. At least it helps you be more compliance and be comply with data protection requirements. But the tool is a subject to co-determination and need a data privacy officer approval. Between all of these interests a balance must be struck.